HealthDay (3/3, Dotinga) reported that people who smoke are at increased risk of developing psoriasis, according to a study recently published in the American Journal of Epidemiology. After examining data on 2,410 individuals diagnosed with psoriasis, then adjusting for confounding factors, “researchers found that current smokers were about 1.9 times more likely to have psoriasis than nonsmokers. Past smokers were nearly 1.4 times more likely to have the condition.”